All Wilson Combat Match Grade AR-15 barrels are precisely crafted of the finest American-made 416R rifle rated steel on computer controlled equipment to our exacting list of technical specifications. These proven barrels feature a hand-polished bore and feedramps and then complete a rigorous final inspection process that ensures your new barrel will meet your most demanding expectations. All barrels feature crisp CNC markings, precision muzzle crown and a chamber and gas port optimized for reliability.300 AAC BlackoutThe 300 Blackout (300 BLK) was designed by Remington/AAC to create a reliable, compact .30 caliber round for the AR platform that uses a standard bolt and magazine. 300 Blackout is optimized for suppressed fire with heavy bullet subsonic loads but can also be used with supersonic ammunition when extra range is needed. The 1-7" twist will work well for heavy bullet subsonic loadings.Wilson Combat Recon Tactical Profile BarrelsThe Recon Tactical is our vision of what a practical, all-around medium profile AR barrel for rigorous tactical training, hardcore hunting or all-purpose field applications should be. The Recon can do it all-very well. Fluted barrel model reduce weight even further and increases stiffness to the barrel for no loss in practical accuracy.Specifications:Chamber: 300 AAC BlackoutFeed Ramps: M4 StyleFinish: Matte Bead-Blasted StainlessGas Block Seat: .750 Diameter by .920 Length - Dimpled for Set ScrewGas System: Pistol LengthLength: 16Material: Stainless Steel, Type 416R, Barrel GradeMuzzle Threads: 5/8 x 24Profile: Recon Tactical - FlutedRifling: 1:7, Precision Button RiflingWeight: 25 oz.